docs(phase29al): post-phi final form ssot
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---
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Status: Active
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Scope: docs-first(仕様不変)
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Related:
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- docs/development/current/main/phases/phase-29al/README.md
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- docs/development/current/main/design/post-phi-final-form-ssot.md
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- docs/development/current/main/design/joinir-plan-frag-ssot.md
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- docs/development/current/main/phases/phase-29ae/README.md
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---
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# Phase 29al P1: Post-PHI final form SSOT(docs-first)
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Date: 2025-12-29
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Status: Ready for execution
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Scope: join 値(PHI 相当)の最終表現と局所 verify を SSOT 化する(仕様不変)
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## Objective
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- “pred によって値が変わる join” を、**暗黙推論なし**で表現できることを SSOT 化する
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- layout / mapping / pred 分類 / verify の責務境界を 1 枚に固定し、再解析や if 地獄の余地を消す
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## Non-goals
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- PHI の完全排除(これは別フェーズ)
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- 既存の error 文字列の変更
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- 新 env var 追加
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- 既定挙動の変更(release は不変)
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## Steps
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### Step 1: SSOT を 1 枚に固定
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Add:
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- `docs/development/current/main/design/post-phi-final-form-ssot.md`
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Must include:
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- “post-phi” の定義(ここでは PHI 排除ではなく、join 値の最終表現/verify の SSOT)
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- `BoundaryCarrierLayout` と `JoinInlineBoundary::join_inputs` の関係
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- 検証点(contract_checks / debug_assertions)の一覧
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- 危険な失敗モード(一般 pattern が専用 pattern を飲む)と SSOT ルール
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### Step 2: 参照導線を追加
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Update:
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- `docs/development/current/main/design/planfrag-ssot-registry.md`(SSOT 参照の追加)
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- 必要なら `docs/development/current/main/design/joinir-plan-frag-ssot.md` の “関連ドキュメント” に追加
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### Step 3: Phase 入口を更新
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Update:
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- `docs/development/current/main/phases/phase-29al/README.md` に P1 を追加(P0→P1 の流れを明確化)
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### Step 4: Now/Backlog/CURRENT_TASK を更新
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Update:
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- `docs/development/current/main/10-Now.md`(Current Focus と Next を更新)
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- `docs/development/current/main/30-Backlog.md`
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- `CURRENT_TASK.md`
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## Verification
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- docs-only のため `cargo build` は必須ではない
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- ただし Gate の SSOT を維持するため、次は任意で実行:
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- `./tools/smokes/v2/run.sh --profile quick`
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- `./tools/smokes/v2/profiles/integration/joinir/phase29ae_regression_pack_vm.sh`
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## Commit
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- `git add -A && git commit -m "docs(phase29al): post-phi final form ssot"`
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@ -23,8 +23,9 @@ Goal: “pattern が重なる/増殖する” を設計で根治し、JoinIR/Pla
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### P1: post-phi(join 入力の最終表現)SSOT
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- ねらい: join 値の “最終表現” と “局所 verify” の不変条件を SSOT 化する(emit/merge の再解析禁止を強化)
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- 指示書: `docs/development/current/main/phases/phase-29al/P1-POST-PHI-FINAL-FORM-SSOT-INSTRUCTIONS.md`
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- SSOT: `docs/development/current/main/design/post-phi-final-form-ssot.md`
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### P2: effect classification SSOT
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- ねらい: pure/control/rc/observability などの効果分類と、許される変形(最適化/RC挿入/DCE)を法典化する
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